79986113 has 2 divisors, whose sum is σ = 79986114. Its totient is φ = 79986112.

The previous prime is 79986097. The next prime is 79986131. The reversal of 79986113 is 31168997.

Together with next prime (79986131) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 76860289 + 3125824 = 8767^2 + 1768^2 .

79986113 is a truncatable prime.

It is a cyclic number.

It is not a de Polignac number, because 79986113 - 2⁴ = 79986097 is a prime.

It is not a weakly prime, because it can be changed into another prime (79986133) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39993056 + 39993057.

It is an arithmetic number, because the mean of its divisors is an integer number (39993057).

Almost surely, 2^79986113 is an apocalyptic number.

It is an amenable number.

79986113 is a deficient number, since it is larger than the sum of its proper divisors (1).

79986113 is an equidigital number, since it uses as much as digits as its factorization.

79986113 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 81648, while the sum is 44.

The square root of 79986113 is about 8943.4955694069. The cubic root of 79986113 is about 430.8620043681.

The spelling of 79986113 in words is "seventy-nine million, nine hundred eighty-six thousand, one hundred thirteen".